Stadium seat cushion



FIG. 1 is a perspective view of the stadium seat cushion featuring a contoured top face and a bottom edge with a pattern outline showing my new design.

FIG. 2 is an alternate perspective view showing the bottom surface; and,

FIG. 3 is a top plan view.

The broken lines shown in the figures form no part of the claimed design. 

CLAIM The ornamental design for a stadium seat cushion, substantially as shown and described. 